Allow only modification of one field in class via Profile

[Marius]

Hello,
we are currently implementing iTop at our firm and are spending a lot of work customizing it.

Our current task is creating a profile that is only allowed to modify one field of our class "Inventar".
We have an action "ev_confirm" that modifies exactly one field of the class. The field name is "confirmation".

I now want to create a profile that is only allowed to modify the field "confirmation" of the class "Inventar".
I tried the following, but that still allows me to modify all the other fields, too.

Can you help me out here? Thanks for your time!

<?xml version="1.0" encoding="UTF-8"?>
<itop_design xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="1.0">
  <classes/>
  <menus/>
  <user_rights>
  <groups>
      <group id="FIM User" _delta="define">
            <classes>
              <class id="Inventar">
                <fields><field id="confirmation"></field></fields>
              </class>
            </classes>
          </group>
    </groups>
     <profiles>
      <profile id="50" _delta="define">
        <name>FIM User</name>
        <description>casual FIM User, only welcome Menu</description>
        <groups>
            <group id="*">
                <actions>
                  <action xsi:type="read">allow</action>
                  <action xsi:type="bulk read">allow</action>
                  <action id="ev_confirm" xsi:type="stimulus">allow</action>
                </actions>
            </group>
            <group id="FIM User">
                <actions>
                  <action xsi:type="write">allow</action>
                  <action xsi:type="bulk write">allow</action>
                  <action id="ev_confirm" xsi:type="stimulus">allow</action>
                </actions>
            </group>
        </groups>
      </profile>
    </profiles>
  </user_rights>
</itop_design>

[dlp]

What did you see on the Web interface about the right of this profile?

[Marius]

In the web interface it says i have complete write & bulk write rights for the whole class "Inventar"

But I only want write / bulk write rights for one field of the class "Inventar"
The web interface only shows the rights for a whole class. I want the user to only be able to write the field "confirmation".

How can i get this to work?

[Marius]

Again this is really important:

Can i create a user rights profile that allows the users to only modify ONE FIELD of a class?

Please respond if you have any tips, thank you!